Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net earnings		$ 731	$ 663
Adjustments to reconcile net earnings to net cash provided by operating activities:
Change in receivables and advance premiums		32	141
Increase in deferred policy acquisition costs		(37)	(29)
Increase in policy liabilities		919	835
Change in income tax liabilities		(367)	(156)
Realized investment (gains) losses		(73)	(13)
Other, net		126	19
Net cash provided (used) by operating activities		1,331	1,460
Securities available for sale:
Fixed maturities sold		266	484
Fixed maturities matured or called		408	66
Perpetual securities matured or called		35	156
Securities held to maturity:
Fixed maturities matured or called		277	85
Costs of investments acquired:
Available for sale fixed maturities acquired		(1,911)	(1,442)
Available for sale equity securities acquired		(364)	0
Other investments, net		(123)	(7)
Settlement of derivatives, net		273	(1,983)
Cash received (pledged or returned) as collateral, net		(189)	503
Other, net		(159)	60
Net cash provided (used) by investing activities		(1,487)	(2,078)
Cash flows from financing activities:
Purchases of treasury stock		(612)	(610)
Proceeds from borrowings		0	989
Dividends paid to shareholders		(167)	(165)
Change in investment-type contracts, net		45	84
Treasury stock reissued		7	13
Other, net		(39)	11
Net cash provided (used) by financing activities		(766)	322
Effect of exchange rate changes on cash and cash equivalents		21	1
Net change in cash and cash equivalents		(901)	(295)
Cash and cash equivalents, beginning of period		4,350	4,658
Cash and cash equivalents, end of period		3,449	4,363
Supplemental disclosures of cash flow information:
Income taxes paid		779	517
Interest paid		54	47
Noncash interest		12	36
Impairment losses included in realized investment losses	[1]	14	6
Capital lease obligations incurred		(1)	0
Associate stock bonus
Treasury stock issued for:
Treasury stock issued		8	8
Shareholder dividend reinvestment
Treasury stock issued for:
Treasury stock issued		6	6
Share-based compensation grants
Treasury stock issued for:
Treasury stock issued		$ 4	$ 4

[1] Includes $14 and $6 for the three-month periods ended March 31, 2016 and 2015, respectively, from change in intent to sell securities